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Web cache replacement plays important role in increasing the performance and speed of browsing web sites using internet. This paper highlights a new proposed Average Least Frequency Used Removal (ALFUR) and compares it with web cache replacement techniques like (LFU, LRU, SIZE, and PCCIA). Hit Ratio (HR) and Byte Hit Ratio (BHR) were used to measure the performance of these algorithms, and it was...
In brachytherapy treatment of cancer, multiple radioactive seeds are implanted inside the cancer tumor by a surgical needle, and the locations of the seeds are dependent on the accurate placement of the needle at desired position inside the patient body. Therefore, needle placement is very important for the effectiveness of brachytherapy treatment. In this work, we propose design of Fuzzy-PID control...
Monitoring Systems are necessary to track and understand the changes that take place in environments. Remote monitoring and data collection systems are useful and effective tools to collect information from fuel storage tanks. The fuel management system is a monitoring device built on the Raspberry-Pi computer, it takes information about tank's fuel level in real time through its sensor and live streaming...
Recently, the electric vehicle has emerged as a powerful platform for mitigating energy crisis and reducing environmental pollution in the transportation sector. The major drawbacks of electrically powered automobile that limits its competitiveness with the internal combustion engine counterpart are the vehicle driving range and battery energy capacity. Hence, limited energy storage warrants the need...
The need for efficient public transportation system such as buses is rapidly increased due to the increasing in population, the passengers need to know the accurate arrival time of the particular bus to particular station and then plan their journey from their home. Fuel monitoring have been the major problem that most of bus companies looking to solve. This paper developed a bus tracking and monitoring...
In the recent years', image processing is becoming an important field in computer science. Also, interaction between human and computer is in increasing rate. Nowadays image processing used in many application for example application like measuring the distance between systems that consist of a camera and objects around the system using Stereo vision. Some previous studies use pixel by pixel search...
This paper implemented the web-based GIS Hotels Business Tourism Site in Khartoum state. The motivation as well as the problem statement is the lack of spatial data and geographical informations of Business Hotels tourism in Khartoum state, hence, lead to the unavailability of web based Business Hotels tourism, also the lack of research papers in this field. One of important goal is the way of supporting...
One of the aims of communication is to increase the data rate. However, frequency resources are scare and valuable for wireless communication systems. How to use frequency resources efficiently is a significant area which needs the attentions of researchers. Ultra Narrow Band (UNB) has attracted wide attentions since it was proposed. M-ary Position Phase Shift Keying (MPPSK) is one of the UNB modulation...
This paper presents a comprehensive approach to evaluate tie line operation control and stiffness for Sudan and Ethiopia networks. Tie line operation control evaluate by the frequency and area control error deviation from Sudan Stander, The work has been supported by on line measurement made for frequency deviation and area control error in the tie line.
Fourth Generation (4G) systems are expected to operate the global mobile network coverage area. They provide various services for different user types and their requirements. Vertical handovers occur between two layers of cells when a user is switched from one layer to the other. This paper details the influence of network parameters on vertical handover performance in a cell by simulating an overlapped...
This paper presents an optimization technique to adjust the LQR and PID controller parameters to control the nonlinear plant of inverted pendulum using the integral square error (ISE) as an objective function. The system is modeled in the state space representation. The control task is to move the cart of the inverted pendulum to a desired point and stabilize the angle of the pendulum at the vertical...
Direct identification and subsequent replacement of faulty components in electronic circuits reduces the overall maintenance costs and time-to-repair the items. In this paper, a tool that can identify the faulty component in any position in the circuit has been designed, simulated and implemented. Device software use wavelet transform algorithm to recognize the signature of the faulty component. The...
this paper presents a survey conducted on several digital signal processing techniques used to compensate for dispersion in optical fibers. DSP techniques have many advantages over other techniques such as the low cost associated with implementing DSP solutions and the reduced complexity. The techniques covered in this study include Finite Impulse Response (FIR), Savory's Method, All-Pass Filters,...
During an embedded system software development, the process of upgrading and downloading the software to the system hardware is fairly easy, because the platform is not encapsulated on its final production form yet. Hence, when the product is ready to be shipped to the end user, an ISP (in-system programming) to upgrade software is needed to add a new feature or to fix a bug. A certain microcontroller...
In many industries (such as pharmaceuticals, beverage industries, etc.), bottles are required to be filled up with a pre-determined amount of liquid. Implementing systems using relay logic control can cause them to be inflexible. Programmable Logic Controllers - PLCs - are more flexible in automating various processes, since the behavior of the system can be changed without changing the electrical...
Single electron circuits are proposed for use as a coherent signal source. This paper uses the Monte-Carlo method to investigate the degree of correlation between successive events in long arrays of tunnel junctions. Simulations use ensemble studies starting from a known condition used to compute the probability density functions for time between events. It is shown that longer arrays produce more...
In the world of Automation Industrial, Programmable Logic Controllers (PLCs) are the dominant types of automatic controllers, and so engineers are racing to develop the best software to give it the ultimate abilities to maximize the outcome. Basically, for understanding the concepts of controlling any process. Mathematical modeling is a mandatory procedure and hence this paper describes a method to...
Several techniques have been investigated in this paper to propose the reduction of phase noise due to electro-magnetic interference for inductor based ultra-wide band voltage controlled oscillator (VCO). Furthermore, figure of merit of VCO and its tuning range have been compared to exhibit the improved performance. According to article, phase noise has been stated as −151 dBc/Hz at 20 MHz offset...
In this work an image processing system was developed to identify malaria parasites in thin blood smears and to classify them into one of the four different species of malaria. Many techniques were implemented in the preprocessing stage to enhance the images. In the first part of the system morphological processing is applied to extract the Red Blood Cells (RBC) from blood images. The developed algorithm...
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